A knifeman attempted to rob a teenage girl.

On July 18, a 15-year-old girl walking along Seaside Road in Eastbourne was approached by a man demanding she hand over her possessions.

The man fled the scene empty-handed after a passer-by intervened, leaving the girl shaken but unharmed. It happened at  around 9pm

A 57-year-old man from Eastbourne has now been arrested on suspicion of robbery. After being interviewed, he was released on bail under strict conditions.

READ MORE: Boy charged after teenager attacked in supermarket

Police are appealing for witnesses to assist with their enquiries.

A spokesman for the force said: “Anyone with information is asked to get in touch online or by calling 101 quoting serial 1411 of 18/07.

“Alternatively, information can be passed to police anonymously via the independent charity Crimestoppers on 0800 555 111.”